From owner-freebsd-bugs@freebsd.org  Tue Dec 12 11:47:47 2017
Return-Path: <owner-freebsd-bugs@freebsd.org>
Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 55013E956EB
 for <freebsd-bugs@mailman.ysv.freebsd.org>;
 Tue, 12 Dec 2017 11:47:47 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 4302B78416
 for <freebsd-bugs@FreeBSD.org>; Tue, 12 Dec 2017 11:47:47 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id vBCBljAc017413
 for <freebsd-bugs@FreeBSD.org>; Tue, 12 Dec 2017 11:47:47 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-bugs@FreeBSD.org
Subject: [Bug 223914] [PATCH] Fix bug in which the long term ULE load
 balancer is executed only once
Date: Tue, 12 Dec 2017 11:47:46 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: CURRENT
X-Bugzilla-Keywords: patch
X-Bugzilla-Severity: Affects Many People
X-Bugzilla-Who: fidaj@ukr.net
X-Bugzilla-Status: New
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: ---
X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-223914-8-7QhBITUWB5@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-223914-8@https.bugs.freebsd.org/bugzilla/>
References: <bug-223914-8@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs/>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 12 Dec 2017 11:47:47 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223914

--- Comment #3 from Ivan Klymenko <fidaj@ukr.net> ---
Hi.
Maybe, this version use less overhead charges for not SMP and given the
sched_random() function.

--- sched_ule.c.orig    2017-11-29 09:23:11.503091000 +0200
+++ sched_ule.c.my1     2017-12-12 13:40:46.330506000 +0200
@@ -880,11 +880,15 @@
 {
        struct tdq *tdq;

-       if (smp_started =3D=3D 0 || rebalance =3D=3D 0)
+       if (smp_started =3D=3D 0)
                return;

        balance_ticks =3D max(balance_interval / 2, 1) +
            (sched_random() % balance_interval);
+
+       if (rebalance =3D=3D 0)
+               return;
+
        tdq =3D TDQ_SELF();
        TDQ_UNLOCK(tdq);
        sched_balance_group(cpu_top);

--=20
You are receiving this mail because:
You are the assignee for the bug.=